Components Of The Hydran 201I System; Hydran 201Ti Intelligent Transmitter - GE Hydran 201 i Instruction Manual

Chapter 1 • Introduction
The Hydran 201i System consists of an Intelligent Transmitter, named the Hydran 201Ti,
and a family of Controllers, collectively named the Hydran 201Ci Controllers.
When the Hydran 201Ti Intelligent Transmitter is combined with the Hydran 201Ci-1
One-Channel Controller, it is called a Hydran 201R Model i Incipient Fault Monitor. A
Hydran 201Ti being used alone or with other Hydran 201Ci Controllers is named a
Hydran 201i System Incipient Fault Monitor.
Both the Hydran 201R Model i and the Hydran 201i System Incipient Fault Monitors can
be networked. The network can be tied to a Supervisory Control and Data Acquisition
(SCADA) computer with a single RS-232 line, either locally at the substation or remotely
through a telephone line and modem.
1.2

COMPONENTS OF THE HYDRAN 201I SYSTEM

1.2.1

Hydran 201Ti Intelligent Transmitter

The Hydran 201Ti Intelligent Transmitter (Figure 1-1 on page 1-3) is the foundation upon
which the Hydran 201i System is built. It consists of a small cylindrical enclosure which
attaches directly to a transformer valve using a brass adaptor. This enclosure contains a
standard Hydran sensor, a thermal conditioning system and a microprocessor-based
intelligent electronic transmitter.
Terminal blocks are provided for easy connection of: ac power; alarm contacts (Gas High,
Gas High-High and System Fail); supervisory link; and one isolated, analog 4–20 mA
output. An RS-232 connector is provided for local computer interface.
A membrane keypad and an alphanumeric, backlit, LCD display enable full interaction
with the unit without requiring the use of an external computer.
The H201Ti is described in detail in Chapter 2.
1-2 Rev. 6, March 2011 Part 17997